Christopher Williamson, PA-C
Christopher Williamson, PA-C is a Surgical Physician Assistant in Johnson City, NY, registered under NPI 1164408712.
Getting there
The practice address on file is 30 HARRISON ST STE 460, Johnson City, NY 13790. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 022018 | NY | Surgical Physician Assistant primary |
| PA 370 | AL | Surgical Physician Assistant |
Licences are recorded in 2 states: NY, AL. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Physician Assistant
- PAC ID
- 4082658570
- Enrollment ID
- I20210304002743
Medicare enrolment is recorded as approved under the provider type Practitioner - Physician Assistant. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: Alabama and New York. The practice address on file is in Johnson City, NY, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 022018
- Specialty
- Surgical Physician Assistant
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Surgical covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363AS0400X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 363AS0400X | Surgical Physician Assistant Surgical | 022018 | NY | primary |
| 363AS0400X | Surgical Physician Assistant Surgical | PA 370 | AL |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1164408712 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 15, 2005 |
| Last updated | Jun 18, 2018 |
| Status | Active |
| Sole proprietor | No |
| Credential | PA-C |
| Practice address |
30 HARRISON ST STE 460 Johnson City, NY 13790 (607) 763-8101 Fax (607) 763-8049 |
| Mailing address |
33 LEWIS RD 2ND FL Binghamton, NY 13905 |
| Other identifiers |
51527772
· Other (AL) 891010200 · Medicaid (AL) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 1 | 6 | 4 | 4 | 0 | 8 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 3 | 4 | 8 | 0 | 7 | 7 | 2 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.